52523691 has 16 divisors (see below), whose sum is σ = 76543488. Its totient is φ = 31772000.

The previous prime is 52523633. The next prime is 52523711. The reversal of 52523691 is 19632525.

52523691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 52523691 - 2⁹ = 52523179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (52523291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21166 + ... + 23516.

It is an arithmetic number, because the mean of its divisors is an integer number (4783968).

Almost surely, 2^52523691 is an apocalyptic number.

52523691 is a deficient number, since it is larger than the sum of its proper divisors (24019797).

52523691 is a wasteful number, since it uses less digits than its factorization.

52523691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042.

The product of its digits is 16200, while the sum is 33.

The square root of 52523691 is about 7247.3230230203. The cubic root of 52523691 is about 374.4999343435.

The spelling of 52523691 in words is "fifty-two million, five hundred twenty-three thousand, six hundred ninety-one".